func drawBorders(c *renderData, ctx *dom.CanvasRenderingContext2D, x, y int) {
// 2 wide borders(4 on edge)
ctx.FillStyle = "black"
cell, _ := c.maze.GetRoom(x, y)
if cell.Walls.Top {
height := 2
if y == 0 {
height = 4
}
ctx.FillRect(x*cellWidth-2, y*cellWidth, cellWidth+4, height)
}
if cell.Walls.Bottom {
height := 2
if y == c.maze.Height()-1 {
height = 4
}
ctx.FillRect(x*cellWidth-2, y*cellWidth+(cellWidth-height), cellWidth+4, height)
}
if cell.Walls.Left {
width := 2
if x == 0 {
width = 4
}
ctx.FillRect(x*cellWidth, y*cellWidth-2, width, cellWidth+4)
}
if cell.Walls.Right {
width := 2
if x == c.maze.Width()-1 {
width = 4
}
ctx.FillRect(x*cellWidth+(cellWidth-width), y*cellWidth-2, width, cellWidth+4)
}
}
func transferFile(typeName, method string, typeID uint8, o *overlay.Overlay) dom.Node {
name := xform.InputText("name", "")
url := xform.InputRadio("url", "switch", true)
upload := xform.InputRadio("upload", "switch", false)
fileI := xform.InputUpload("")
urlI := xform.InputURL("", "")
s := xform.InputSubmit(method)
name.Required = true
typeFunc := func(dom.Event) {
if url.Checked {
urlI.Style().RemoveProperty("display")
fileI.Style().SetProperty("display", "none", "")
urlI.Required = true
fileI.Required = false
fileI.SetID("")
urlI.SetID("file")
} else {
fileI.Style().RemoveProperty("display")
urlI.Style().SetProperty("display", "none", "")
fileI.Required = true
urlI.Required = false
urlI.SetID("")
fileI.SetID("file")
}
}
typeFunc(nil)
url.AddEventListener("change", false, typeFunc)
upload.AddEventListener("change", false, typeFunc)
f := xjs.AppendChildren(xdom.Form(), xjs.AppendChildren(xdom.Fieldset(),
xjs.SetInnerText(xdom.Legend(), method+" "+typeName),
xform.Label(typeName+" Name", "name"),
name,
xdom.Br(),
xform.Label("URL", "url"),
url,
xdom.Br(),
xform.Label("Upload", "upload"),
upload,
xdom.Br(),
xform.Label("File", "file"),
fileI,
urlI,
xdom.Br(),
s,
))
s.AddEventListener("click", false, func(e dom.Event) {
if name.Value == "" {
return
}
if url.Checked {
if urlI.Value == "" {
return
}
} else if len(fileI.Files()) != 1 {
return
}
s.Disabled = true
name.Disabled = true
url.Disabled = true
upload.Disabled = true
fileI.Disabled = true
urlI.Disabled = true
e.PreventDefault()
go func() {
d := xdom.Div()
uo := overlay.New(d)
uo.OnClose(func() {
o.Close()
})
xjs.Body().AppendChild(uo)
status := xdom.Div()
d.AppendChild(xjs.SetInnerText(status, "Transferring..."))
conn, err := websocket.Dial("ws://" + js.Global.Get("location").Get("host").String() + "/transfer")
if err != nil {
xjs.SetInnerText(status, err.Error())
return
}
defer conn.Close()
w := byteio.StickyWriter{Writer: byteio.LittleEndianWriter{Writer: conn}}
r := byteio.StickyReader{Reader: byteio.LittleEndianReader{Reader: conn}}
pb := progress.New(color.RGBA{255, 0, 0, 0}, color.RGBA{0, 0, 255, 0}, 400, 50)
d.AppendChild(pb)
if url.Checked {
w.WriteUint8(typeID << 1)
data.WriteString(&w, urlI.Value)
length := int(r.ReadInt32())
total := 0
for total < length {
switch v := r.ReadUint8(); v {
case 1:
i := int(r.ReadInt32())
total += i
pb.Percent(100 * total / length)
default:
xjs.SetInnerText(status, ReadError(&r).Error())
return
}
}
} else {
f := files.NewFileReader(files.NewFile(fileI.Files()[0]))
l := f.Len()
if l == 0 {
xjs.SetInnerText(status, "Zero-length file")
return
}
w.WriteUint8(typeID<<1 | 1)
w.WriteInt32(int32(l))
io.Copy(&w, pb.Reader(f, l))
}
d.RemoveChild(pb)
xjs.SetInnerText(status, "Checking File")
data.WriteString(&w, name.Value)
var ctx *dom.CanvasRenderingContext2D
for {
switch v := r.ReadUint8(); v {
case 0:
if r.Err != nil {
xjs.SetInnerText(status, r.Err.Error())
} else {
xjs.SetInnerText(status, ReadError(&r).Error())
}
return
case 1:
files := make([]xform.Option, r.ReadInt16())
for i := range files {
files[i] = xform.Option{
Value: strconv.Itoa(i),
Label: data.ReadString(&r),
}
}
j := xform.SelectBox("files", files...)
sel := xjs.SetInnerText(xdom.Button(), "Select")
fo := overlay.New(xjs.AppendChildren(xdom.Div(), xjs.AppendChildren(xdom.Fieldset(),
xjs.SetInnerText(xdom.Legend(), "Please select the "+typeName+" file"),
xform.Label("File", "files"),
j,
xdom.Br(),
sel,
)))
c := make(chan int16, 0)
done := false
fo.OnClose(func() {
if !done {
done = true
c <- -1
}
})
sel.AddEventListener("click", false, func(dom.Event) {
if !done {
done = true
v, err := strconv.Atoi(j.Value)
if err != nil {
v = -1
}
c <- int16(v)
fo.Close()
}
})
xjs.Body().AppendChild(fo)
w.WriteInt16(<-c)
close(c)
case 2:
w := r.ReadInt32()
h := r.ReadInt32()
canvas := xdom.Canvas()
canvas.Width = int(w) * 8
canvas.Height = int(h) * 8
d.AppendChild(canvas)
ctx = canvas.GetContext2d()
ctx.Scale(8, 8)
case 3:
xjs.SetInnerText(status, data.ReadString(&r))
case 4:
x := r.ReadInt32()
y := r.ReadInt32()
red := r.ReadUint8()
green := r.ReadUint8()
blue := r.ReadUint8()
alpha := r.ReadUint8()
ctx.FillStyle = "rgba(" + strconv.Itoa(int(red)) + ", " + strconv.Itoa(int(green)) + ", " + strconv.Itoa(int(blue)) + ", " + strconv.FormatFloat(float64(alpha)/255, 'f', -1, 32) + ")"
ctx.FillRect(int(x), int(y), 1, 1)
case 255:
uo.Close()
return
}
}
}()
})
return f
}
func fillCell(ctx *dom.CanvasRenderingContext2D, x, y int, color string) {
ctx.FillStyle = color
ctx.FillRect(x*cellWidth+2, y*cellWidth+2, cellWidth-4, cellWidth-4)
}
// The CanvasRenderingContext2D.getImageData() method of the Canvas 2D API returns an ImageData object
// representing the underlying pixel data for the area of the canvas
// denoted by the rectangle which starts at (sx, sy) and has an sw width and sh height.
// x The x coordinate of the upper left corner of the rectangle from which the ImageData will be extracted.
// y The y coordinate of the upper left corner of the rectangle from which the ImageData will be extracted.
// width The width of the rectangle from which the ImageData will be extracted.
// height The height of the rectangle from which the ImageData will be extracted.
func getImageData(ctx *dom.CanvasRenderingContext2D, x, y, width, heigth int) *imageData {
o := ctx.Call("getImageData", x, y, width, heigth)
return &imageData{Object: o}
}